摘要
对唐山检定场不同类型GNSS观测墩的稳定性影响研究的结果表明:1)观测墩存在长趋势的线性变化和明显的年周期变化,年周期变化主要与季节变化有关;2)观测墩所处环境不同,其稳定性亦存在差别,如室内观测墩的周年变化比室外的要小;3)标高3.5 m的室外裸露观测墩反映不出与太阳运动相关的周日运动。
The results of the influence of seasonal variations of temperature and sunshine on the observation pier＇s stability were introduced,based on the analysis of GNSS continuous observations data from different types of observation piers in GNSS Tangshan test field. The results indicate that： 1） The variation of the observation pier includes long term tendency variation and a significant annual variation which is mainly caused by seasonal changes of precipitation and temperature. 2） Stability of the observation pier is affected by external environment. For instance,the annual changes of the pier in the indoor is smaller than the outdoor. 3） In the current observation condition and precision,the pier with a height of 3. 5 m outdoor can not reflect any diurnal periodicity motions related to the sun.
出处
《大地测量与地球动力学》
CSCD
北大核心
2014年第2期31-35,40,共6页
Journal of Geodesy and Geodynamics
基金
中国地震局地震科技星火计划(XH12065Y)
中国地震局地震行业专项(201208006)
关键词
GNSS
观测墩
稳定性
温度季节变化
日照
GNSS
observation pier
stability
seasonal variations of temperature
sunshine
